usb: xhci-mtk: set the dma max_seg_size

ribalda · gregkh · commit 9fd10829a9eb · 2023-07-25T17:40:54.000+02:00
Allow devices to have dma operations beyond 64K, and avoid warnings such as: DMA-API: xhci-mtk 11200000.usb: mapping sg segment longer than device claims to support [len=98304] [max=65536] Fixes: 0cbd4b3 ("xhci: mediatek: support MTK xHCI host controller") Cc: stable <stable@kernel.org> Tested-by: Zubin Mithra <zsm@chromium.org> Reported-by: Zubin Mithra <zsm@chromium.org> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Link: https://lore.kernel.org/r/20230628-mtk-usb-v2-1-c8c34eb9f229@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
@@ -586,6 +586,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)
 	}
 
 	device_init_wakeup(dev, true);
+	dma_set_max_seg_size(dev, UINT_MAX);
 
 	xhci = hcd_to_xhci(hcd);
 	xhci->main_hcd = hcd;

Original file line number	Diff line number	Diff line change
`@@ -586,6 +586,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)`
`586`	`586`	`}`
`587`	`587`
`588`	`588`	`device_init_wakeup(dev, true);`
	`589`	`+ dma_set_max_seg_size(dev, UINT_MAX);`
`589`	`590`
`590`	`591`	`xhci = hcd_to_xhci(hcd);`
`591`	`592`	`xhci->main_hcd = hcd;`